If you do not know the taboos and rules of entering the mine tunnel, you have to visit this attraction. In the past, workers had to take a safty oath and wear a helmet before they enter the mine tunnel due to the serious threat of collapse. During the Japanese colonial rule, the anuses of mine workers were examined upon their exit of the tunnel to prevent gold theft. Now visitors can experience the underground work conditions of mine workers in this tunnel, without the anus check of course!
